... tools . This release focuses on giving photographers precise control over color and tone , while keeping a clean, non-destructive workflow and a familiar, macOS-like interface . Color Grading & Tone Control iPhotro now includes a full, professional-style color toolset: Color Curves Master RGB curve plus individual Red, Green, and Blue channels Fine control over shadows, midtones, and highlights Real-time preview while editing Levels Histogram-based tonal adjustment Per-channel (RGB) control for accurate contrast and exposure correction Selective ... ... Workflow & Philosophy Local-first : no cloud, no accounts Non-destructive editing by design Smooth, distraction-free UI inspired by macOS photo apps GPU-accelerated previews for responsive color editing Who It s For Photographers looking for a FOSS alternative